Banski denar is a type of coin that was minted for use in territory of medieval Slavonia. It was a type of coin that was very pure in silver and was very valued. It helped int he economic growth of the aforementioned territory. The start of the minting of the banski denar is tied to Bela the IV. It is generally thought that he started minting these coins. The ending of mintage of these coins was because of Ludovik I. or his daughter Maria. They are often found as single coins, but can also be found in larger numbers together. On the avers is a marten who is most commonly shown between two six-cornered stars. On the avers is a large cross with two orizontal beams. Above the large beam is a six-cornered star and a moon . Below the large beam are two heads, each with a crown on them. Left and right of the large beam are the sigle according to which we can date the coins more easily.